USDA – SI Conversion Units

In recognition of the Metric Conversion Act of 1975, P. L. 94-168, appropriate conversion factors have been provided in the table below. If interested in further use of the coherent systems of SI units should refer to The Metric Guide for Federal Construction, First Edition as Published by the National Institute of Building Sciences.

Table of Conversion Factors to Metric (SI) Units













*Exact value; others are rounded to the minimum number of signature units.